What Causes Cancer? The Truth Most Doctors Don’t Talk AboutIn this episode of Intellectual Medicine, Dr. Stephen Petteruti explores the relationship between cancer, metabolism, sugar, insulin, body fat, and prostate cancer progression. He discusses the Warburg theory, which suggests that cancer may begin with dysfunctional mitochondrial metabolism, and compares it with the later focus on genetic causes of cancer. While he argues that the idea of “starving cancer” by eliminating sugar is too simplistic, he also emphasizes that metabolic health plays a real role in cancer risk and progression.The episode focuses heavily on prostate cancer, which Dr. Petteruti describes as unique compared with other cancers. He argues that conventional approaches often overlook the environment in which cancer develops, including excess body fat, high insulin, elevated blood sugar, inflammation, and poor metabolic health. He also discusses tests such as fasting insulin, hemoglobin A1c, and continuous glucose monitoring, as well as the importance of nutritional and behavioral change. The episode closes with a warning against extreme diets, oversimplified supplement advice, and one-size-fits-all cancer theories.

Timestamps:

(00:00) What Causes Cancer?

(01:02 )The Warburg Theory

(02:14) Genetics vs. Metabolism

(04:22) Why “Starving Cancer” Is Too Simplistic

(05:42) Body Fat, Insulin, and Prostate Cancer

(08:30) Tests That May Help Assess Metabolic Health

(10:47) Food, Weight Loss, and Cancer Risk

(13:42) The Anti-Cancer Lifestyle

(15:04) Toxins, Viruses, and Parasites

(16:15) NAD, Mitochondria, and Supplement Caution

(17:33) Growth Hormone, IGF-1, and Cancer Risk

(19:12) Why Extreme Dieting Is Not the Answer

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Dr. Stephen Petteruti is a board-certified physician specializing in longevity-focused, integrative medicine. He works with men navigating prostate cancer, testosterone, and hormone health, aging, and performance using proactive, evidence-informed strategies grounded in real clinical practice. His approach prioritizes preserving function, strength, and quality of life while helping patients make clear, informed decisions beyond reactive, fear-driven care.

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The content presented in this video reflects the opinions and clinical experience of Dr. Stephen Petteruti and is intended for informational and educational purposes only. It is not medical advice and should not be used as a substitute for professional diagnosis, treatment, or guidance from your personal healthcare provider. Always consult your physician or qualified healthcare professional before making any changes to your health regimen or treatment plan.